1. Drug poisoning deaths in the U.S., 1980-2008;Warner;NCHS Data Brief,2011
2. Vital signs: overdoses of prescription opioid pain relievers—U.S., 1999–2008;MMWR Morb Mortal Wkly Rep,2011
3. Substance Abuse and Mental Health Services Administration. The NSDUH Report: trends in nonmedical use of prescription pain relievers: 2002 to 2007. Rockville MD. 2009.
4. Opioid analgesics and rates of fatal drug poisoning in the U.S;Paulozzi;Am J Prev Med,2006
5. Prescription drug overdoses plague;Frosch,2012